When I experience die off from candida (when I cut out sugar and ramp up my intake of candida-killing things), I get headaches, constipation, and sugar cravings for a few days, but reduce these problems by taking:
Aspirin for the headaches, and ice pack on back of neck to further reduce the headaches on those days
Herbal laxative to get past the constipation days
Vitamin C powder in water with a little stevia to reduce the sugar cravings, drinking it like "lemonade". It helps the sugar cravings even if I leave out the stevia, so it is definitely the vitamin c in the drink doing the work. I use plain ascorbic acid powder as the vitamin c source for this drink.
Drinking some ice cold carbonated water helps as well, to reduce the headache/sugar cravings - something about the bubbles and the cold combined seems to help.
None of these make the die-off days suddenly become wonderful, but they do reduce the problems.
Note that there is a Candida forum in Phoenix Rising, but it doesn't get many posts, so it's probably a good thing you posted here instead to get the posting viewed by more than a handful of people.